Security is a BIG concern for the typical Rolls Royce buyer.
They are so wealthy they fear being robbed or kidnapped.
Driving such flashy cars (Rolls Royce) just make it worse.

So, shouldn't all new models be armored and designed from scratch to withstand armor weight.
Maybe they could even use armor materials as structural members to improve rigidity and sound insulation.

Of course this might not apply to convertibles, although it would be interesting to see an convertible that rises an armored top and windows, electrically or hydraulically operated, of course.